Files in this Data Supplement:

• Supplemental file 1 - Fig. S1, phylogeny of leucyl aminopeptidase. DNA polymerase III chi subunit, and valyl-tRNA synthetase
  Zipped TIF document, 1.8MB.
• Supplemental file 2 - Fig. S2, phylogeny of homologue to 3-Fig. Fig. methyladenine DNA glycosylase I, aspartate/glutamate racemase, and patatin-like phospholipase
  Zipped TIF document, 1.8MB.
• Supplemental file 3 - Fig. S3, phylogeny of integron integrase, integrase catalytic core, transposase IS911, and integrase catalytic core
  Zipped TIF document, 2MB.
• Supplemental file 4 - Fig. S4, phylogeny of prokaryotic DksA/TraR C4-type zinc finger, 2MB.esterase/lipase/thioesterase, and hypothetical protein
  Zipped TIF document, 1.8MB.
• Supplemental file 5 - Table S1, primers; supplemental text; legends to supplemental figures
  MS Word document, 43K.